A Vendor Lock-In is when certain software is developed to be incompatible by design with other software that have similar functionality. It is used to establish a monopoly. And any such function is malicious.
This comment thread is for people to document various implementations of this malicious feature.
With 9% Rotten Tomatoes score 2006 Kurt Wimmer film Ultraviolet starring Milla Jovovich cannot possibly be any good, can it? Well I re-watched it for this review and while I somewhat see where the critics are coming from, I also have enjoyed the hell out of it.